A line of best fit is f(x) = -0.86x + 13.5 for the set of points in
the table.
Using the equation for the line of best fit, what is a good
approximation for the value of the function, f(x), when x = 18?
0-5
х
2
3
O-2
03
f(x)
12
10
10
8
9
5
6
5
6
7
8
9
O 12
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